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#include "str.h"
static constexpr size_t MIN_BUFFER_GROW_SIZE = 16;
TStringInput::~TStringInput() = default;
size_t TStringInput::DoNext(const void** ptr, size_t len) {
len = Min(len, S_->size() - Pos_);
*ptr = S_->data() + Pos_;
Pos_ += len;
return len;
}
void TStringInput::DoUndo(size_t len) {
Y_VERIFY(len <= Pos_);
Pos_ -= len;
}
TStringOutput::~TStringOutput() = default;
size_t TStringOutput::DoNext(void** ptr) {
if (S_->size() == S_->capacity()) {
S_->reserve(FastClp2(S_->capacity() + MIN_BUFFER_GROW_SIZE));
}
size_t previousSize = S_->size();
ResizeUninitialized(*S_, S_->capacity());
*ptr = S_->begin() + previousSize;
return S_->size() - previousSize;
}
void TStringOutput::DoUndo(size_t len) {
Y_VERIFY(len <= S_->size(), "trying to undo more bytes than actually written");
S_->resize(S_->size() - len);
}
void TStringOutput::DoWrite(const void* buf, size_t len) {
S_->append((const char*)buf, len);
}
void TStringOutput::DoWriteC(char c) {
S_->push_back(c);
}
TStringStream::~TStringStream() = default;
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